If you were born between June 15th and July 17th, you were born with Sun in Gemini. When the Sun moves into Gemini, it creates someone extremely intellectual, intelligent, calculative, witty, charming, crafty, and maybe a little bit restless. These folks are often very open minded and enjoy processing thought through verbal communication.  
To see your own personal chart, you can search a "vedic chart calculator" or email me at astrologynowpodcast@gmail.com and I'll be happy to send you your chart. For understanding where this is happening in your chart, you can visit innerknowing.yoga and click on "north Indian chart" to see where Gemini is in your birth chart.